Concentrator.



H. W. FAUST.

CONCENTRATOR.

APPucmoN FILED FEB.|7.1916.

Patented Aug. 13, 1918.

WITNESSES:

UNITED sTATEs PATENT HENRYW. reuse, or sEArTLE, WASHINGIQN, Assreivo'a To sriair. B. muse 1 coucnivmnron."

Application: filed February 17', 1916. Serial T 0 all whom it may concern: I

Be it known that I, HENRYNV; FAUST, a citizen ofthe United States, and a resident of Seattle, inthe county of King and State of Vashington, l12LVG=lI1VG11t8ClC8It8;l11 11GW- and useful Improvements in Concentrators;

Speci ficatio'n of LettersPatentl its use is of the utmost importance. My' improved concentrator has been found to use a minimum of Water in actual tests. The swishing of the Water in the hutch interferes with the action of the plunger and causes imperfect pulsations, and eddies in the water adjacent the screens and consequently dead spaces on the screen. It is to overcome the above objections in concentrating that my machine is designed. 7

Other objects will appear as my invention is more fully explained in the following specification, illustrated in the accompanying drawings and pointed out in the appended claim. V

In the drawings, Figure 1 is a front elevation of my concentrator with parts broken away. Fig. 2 is an end elevation with parts broken away.

Referring more particularly to the drawings, A and B indicate adjacent hutch compartments which are similar except that screens 1 are at different. elevations. Each hutch is divided transversely by a partition 2 and a hopper bottom 3 which slopes to ward the front of the hutch. Partition 2 does not extend down as far as bottom 3 but leaves a gate'opening'for the flow of water to the screen compartment of the hutch on one side of said .partition from the plunger compartment on the other side. Screens 1 are provided with transverse bars 4 which control the action of water against the screen. An eccentricshaft 5 passes through the plunger compartments of the hutch and is rovided with a drive pulley Plungers are provided one in each plunger compartment. The plungers ;are pivotally and adj'ustably" hinged or lens-- pended at one end fromza rod 8 Whichwis' parallel with shaft'5. Near the otherend a vertical. cam standard 9- is securedwhich su'ppo'rtsanantifriction cam roller 10 inanoil bath cup. 11.- at its upperiend, Cam" rollers 10 bear against adjustable eccentric cams 12; Which are secured'to shafts 5. Ad

justable' springs 13 are attached to the front of the plungers and to the hutch cover. A

water supply trough 14: supplies Water tothe plunger eompartments 'and an'ore feeding box 15' supplies ore to the first screen.

A fiexible packing strip 16 issecured to the' rear edge of the plunger'and' 'bears against the back ofthe hutch soas'to keep the joint between the back of the plunger and hutch tightto Water-on the back stroke. This pre ventssplashing and swishing and enables the device to operate with less water than otherwise. The operation of my concentrator is as follows:

Ore and-water are supplied as previously described. The ore bed on the screens .is maintained at a predetermined depth by regulating the supply of ore and water. The water level is maintained at a little above the top of the ore bed. The flow of ore and water is continuous from the first screen toward the second, etc. The ore is floated from one screen to the next over a bafiie 17 The eccentric cams are set to give the desired stroke to the plungers at the particular speed of shaft 5. The cams throw the plungers downwardly which transmits an impulse to the water in the hutch. The flow of water from the plunger compartment to the screen compartment forces the water up through the screen from beneath which raises the ore bed and allows it to float toward the lower screen and at the same time shakes the fine material of the higher specific gravity through the screen and into the hutch. If the gangue is the lighter, the ore will pass through the screens and the gangue will Patented Augie; 1918.,

' and gangue are of nearly the same specific w acting return movement.

wave action to set up with a resulting disturbance throughout the entire body of Water. The disturbance or eddies flin the Water disturbs the ore bed and causes unevenness in the Work of the screens and frequently causes portions of the screen to be inactive. In concentrating ores in which the metal gravity, it requires very little disturbance of the. ore bed to seriously affectthe results obtained. My'concentrator has been found.

particularly Well adapted for tungsten ores :Which are very valuable and diflicult to separate. The spring returns the plunger to normal position With a movement Which suits the Work in hand particularly Well and gives much better results than a positive It is "further believed that the hinged action of the plunger crowds the Water downward and gives it a more even pulsation With less disturbance than the slap stroke of a direct acting eccentric plunger. My concentrator may be built either single or double, that is With plungers on one or both sides of the screens.

While I have shown a particular form of embodiment of my invention, I am aware that many minor changes therein will readlly suggest themselves to others sk lled in the art Without departing from the spirit the hutch Wall for pivotally supporting the plunger to permit a bodily movement of such plunger about the pivot, whereby to move one edge of such plunger toward the hutch Wall. in the operating stroke thereof and from the wall on the opposing stroke,

a sealing strip on such plunger edge, means for positively moving the plunger on its op eratlve stroke about its pivot, and independent spring means for returning the plunger.

HENRY 'W. FAUST.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

Water pulsating, 

